These shocking photos show the scale of devastation in California where wildfires have raged since Sunday.

The death toll has risen to 23 and around 300 people are missing.

More than 20,000 have been forced to evacuate as infernos destroy thousands of acres of land.

Napa Valley’s famed vineyards and wineries have also fallen victim to the flames.

At least four wineries belonging to the Napa Valley Vintners (NVV) have suffered total or very significant losses, and around nine other members reported damage to their winery, outbuildings or surrounding vineyards.

More than 20,000 people were forced to evacuate (Picture: AP Photo/Jeff Chiu)

An aerial view of properties destroyed by the Tubbs Fire (Picture: REUTERS/Stephen Lam)

The death toll has risen to 23 (Picture: REUTERS/Stephen Lam)

The devastation is on a mammoth scale (Picture: REUTERS/Stephen Lam)

A boiling river of red wine was seen flowing under debris at the Paradise Ridge Winery in Santa Rosa — one of the hardest hit areas.

A NVV spokesperson said: ‘Complicating matters is the fact that it is harvest season in Napa Valley. However, we estimate that 90 percent of the grapes were picked before the fires started on Sunday night. Wineries able to assemble crews and safely get to their vineyards are continuing to harvest grapes.

‘Power outages and the inability of employees to report to work also have also created challenges for wineries, especially for tasting rooms. However, most wineries have emergency generators, which has helped maintain production capabilities.’

There’s no official word yet as to what caused it, but evidence points to fallen power lines in Sonoma County.

Firefighters were called to at least ten different locations over a 90-minute period on Sunday night to respond to numerous emergency calls including reports of power lines which had crashed to the ground in high winds and were sparking.

Many people have yet to return home to see the damage (Picture: REUTERS/Stephen Lam)

Around 300 others are unaccounted for (Picture: AP Photo/Jeff Chiu)

Fallen power lines are thought to have started the wildfires (Picture: AP)

The state has been burning since Sunday (Picture: REUTERS)

Some fingers are being pointed at utility provider PG&E, and its ability to maintain power lines has been called into question.

But a spokesperson said: ‘The historic wind event that swept across PG&E service area late Sunday and early Monday packed hurricane-strength winds in excess of 75 mph in some cases.

‘These destructive winds, along with millions of trees weakened by years of drought and recent renewed vegetation growth from winter storms, all contributed to some trees, branches and debris impacting our electric lines across the North Bay.

‘In some cases, we have found instances of wires down, broken poles and impacted infrastructure. Where those have occurred, we have reported them to the CPUC and CalFire. Our thoughts are with all those individuals who were impacted by these devastating wildfires.’